Intelligent Intake Valve (i 2 Valve) maintenance instructions

Transcription

1 Intelligent Intake Valve (i 2 Valve) maintenance instructions Note: This document is an addendum to Revision C of the ACQUITY UPLC System Operator s Guide. Contents: Topic Page Overview 1 Maintenance schedule 2 Maintenance considerations 2 Spare parts 3 Replacing the i 2 Valve actuator 4 Replacing the i 2 Valve cartridge 13 Replacing the inlet filter 17 Replacing the accumulator check valve 19 Overview When installed on Waters ACQUITY UPLC Systems, the Waters Intelligent Intake Valve (i 2 Valve) achieves faster system priming and startup times. More robust operation and highly repeatable system performance are achieved with difficult-to-pump solvents because disturbances to solvent flow in the inlet lines are minimized. The i 2 Valve's actuation is precisely controllable, and the algorithms responsible for its operation respond instantly to the fast, pressure-sensing capability of the ACQUITY UPLC binary solvent manager. A replaceable cartridge assembly and an actuator assembly serve as the i 2 Valve s major components. An applied current generates a force, timed with the motion of the pump plungers, that pushes a ball off its seat in the cartridge assembly. The effect is to closely synchronize the valve performance with pump operation , Rev. B Waters and ACQUITY UPLC are registered trademarks of Waters Corporation. Phillips is a registered trademark of Phillips Screw Company. All other trademarks are the sole property of their respective owners. Copyright 2007 Waters Corporation. 1

2 Maintenance schedule Waters recommends that you perform the following routine maintenance on the i 2 Valve to ensure reliable operation and accurate results. Under heavy usage or when using aggressive solvents, perform these maintenance tasks more frequently. Recommended routine maintenance schedule : Maintenance procedure Frequency For information... Replace the i 2 Valve cartridge Replace the inlet filter Replace the accumulator check valve Replace the i 2 Valve actuator Once every year or as needed Once every year or as needed Once every year or as needed Five years from the date of manufacture or as needed See page 13 See page 17 See page 19 See page 4 Maintenance considerations Observe these warning and caution advisories when you perform maintenance on the i 2 Valve. Warning: To prevent injury, always observe good laboratory practices when you handle solvents, change tubing, or operate the system. Know the physical and chemical properties of the solvents you use. See the Material Safety Data Sheets for the solvents in use. Warning: To avoid electric shock, do not open the power supply cover. The power supply does not contain user-serviceable parts. 2

3 Caution: To avoid damaging the i 2 Valve actuator, do not attempt to introduce pressurized liquid or gas through the valve's inlet or outlet ports. To avoid damaging electrical parts, never disconnect an electrical assembly while power is applied to an instrument. To completely interrupt power to an instrument, set the power switch to Off, and then unplug the power cord from the AC outlet. After power is removed, wait 10 seconds before you disconnect an assembly. To prevent circuit damage because of static charges, do not touch integrated circuit chips or other system instruments that do not require manual adjustment. Requirement: To maintain the efficiency of the binary solvent manager and to obtain accurate, reproducible chromatograms, use only MS-grade solvents, water, and additives. For details, see Appendix D of the Waters ACQUITY UPLC System Operator s Guide. Spare parts This section lists recommended spare parts for the i 2 Valve. Unlisted parts are not recommended for replacing by customers. Recommended spare parts for the i 2 Valve : Item Part Number Check valve assembly, double ball and seat i 2 Valve actuator assembly i 2 Valve cartridge assembly Inline filter assembly Tube assembly, SSV to i 2 Valve

4 Replacing the i 2 Valve actuator Caution: To prevent contamination, wear particle-free, powder-free, non-latex gloves when replacing the i 2 Valve actuator. Required materials i 2 Valve Particle-free, powder-free, non-latex gloves #0 Phillips screwdriver 5/16-inch open-end wrench To replace the i 2 Valve actuator: Caution: To avoid damaging electronic components, power-off the binary solvent manager before replacing the i 2 Valve actuator. 1. Power-off the binary solvent manager. Tip: The binary solvent manager is referred to as pump on the warning label affixed to the i 2 Valve actuator. Warning: Solvent spill risk. Failure to move the solvent bottles to a location below the solvent manager head can result in solvent spills. 2. Move the solvent bottles to a location below the solvent manager head. Caution: Failure to grasp the i 2 Valve connector by the knurled diameter could result in damage to the connector or cable. 4

5 3. Grasp the i 2 Valve connector by the knurled diameter and pull it toward you to disconnect it from the receptacle. Connector receptacle i 2 Valve connector Knurled diameter 4. Loosen the tube fitting on the inlet filter. 5

6 5. Unscrew the inlet filter assembly from the side of the i 2 Valve actuator. Inlet filter assembly Tube fitting i 2 Valve actuator 6. Use the 5/16-inch open-end wrench to loosen the shell nut. Shell nut 5/16-inch wrench 6

7 Caution: When you remove the valve assembly, ensure the PEEK washer, which is normally on the top face of the i 2 Valve cartridge, does not remain in the head. Never place the actuator assembly or electrical connector in the drip tray. 7. Remove the i 2 Valve actuator from the bottom of the primary pump head. Bottom of primary pump head i 2 Valve actuator TP

8 8. Insert the new PEEK washer into the new cartridge. Make sure the chamfered edge of the washer faces away from the cartridge. Chamfered edge facing away from check valve PEEK washer Check valve cartridge 9. Ensure the clamping plates are loose and in their fully open position. 10. Insert the cartridge into the i 2 Valve actuator with the grooved end first. Grooved end of cartridge i 2 Valve actuator 8

9 11. Squeeze the two clamping plate tabs on the i 2 Valve actuator with one hand to clamp the cartridge into the actuator. Ensure the clamping plates are fully in and the check valve is clamped. Clamping plate tab Clamping plate tab Clamping plates 12. While squeezing the clamping plate tabs, use the #0 Phillips screwdriver to tighten the four screws that secure the plates. Phillips screwdriver Screws (4) 9

10 13. Orient the valve so that the cable exits from the left side of the i 2 Valve assembly. Insert the new valve actuator into the bottom of the primary pump head, and route the cable behind the valve actuator. 14. Finger tighten the shell nut to secure the valve, and then use the 5/16-inch open-end wrench to tighten the nut an additional 1/8-turn. Shell nut 5/16-inch wrench 10

11 15. Insert the inlet filter assembly into the inlet port on the i 2 Valve assembly, and tighten it securely. Inlet filter assembly Tube fitting i 2 Valve actuator 16. Finger tighten the tube fitting on the inlet filter assembly to the extent possible. 11

12 17. Align the red dot on the i 2 Valve connector with the red dot on the receptacle, in the twelve o clock position, and insert the connector into the receptacle. Red dot on receptacle Connector receptacle i 2 Valve connector Red dot on connector 18. Power-on the binary solvent manager. 12

13 Replacing the i 2 Valve cartridge Caution: To prevent contamination, wear particle-free, powder-free, non-latex gloves when replacing the i 2 Valve cartridge. Required materials i 2 Valve cartridge Particle-free, powder-free, non-latex gloves #0 Phillips screwdriver 5/16-inch open-end wrench To replace the i 2 Valve cartridge: Caution: To avoid damaging electronic components, power-off the binary solvent manager before replacing the i 2 Valve cartridge. 1. Power-off the binary solvent manager. Tip: The binary solvent manager is referred to as pump on the warning label affixed to the i 2 Valve actuator. Warning: Solvent spill risk. Failure to move the solvent bottles to a location below the solvent manager head can result in solvent spills. 2. Move the solvent bottles to a location below the solvent manager head. Caution: When you remove the i 2 Valve assembly, ensure the PEEK washer, which is normally on the top face of the i 2 Valve cartridge, does not remain in the head. 3. Remove the i 2 Valve assembly from the bottom of the primary pump head. See steps 3 through 7 starting on page 5. Caution: To avoid damaging the i 2 Valve actuator, do not back the screws out all the way. 4. Use the #0 Phillips screwdriver to loosen the four screws that secure the plates 1/2-turn for the plates to spring open. The shell nut should still be free to rotate. 13

14 Tips: Avoid touching the clamping plate tabs when loosening the screws. The shell nut can be rotated to access all four screws. Phillips screwdriver Shell nut Clamping plate tab Screws (4) Clamping plate tab TP02788 Clamping plates 5. Remove the cartridge from the i 2 Valve actuator when both plates are in the maximum open position. Ensure that the low pressure gasket has been removed with the cartridge. Tip: If you cannot remove the cartridge from the valve actuator, rotate the cartridge 1/2-turn and then remove it. 6. Carefully remove the new cartridge and washer from the packaging. 14

15 7. Insert the new PEEK washer into the new cartridge. Make sure the chamfered edge of the washer faces away from the cartridge. Chamfered edge facing away from check valve PEEK washer Check valve Low pressure gasket (factory installed) 8. With the clamping plates still open, insert the cartridge into the i 2 Valve actuator with the grooved end first. Grooved end of cartridge i 2 Valve actuator 15

16 9. Squeeze the two clamping plate tabs on the i 2 Valve actuator with one hand to clamp the cartridge into the actuator. Ensure the clamping plates are fully in and the check valve is clamped. Clamping plate tab Clamping plate tab Clamping plates 10. While the clamping plate tabs are being squeezed, use the #0 Phillips screwdriver to tighten the four screws that secure the plates. Phillips screwdriver Screws (4) 11. Install the i 2 Valve assembly on the primary pump head. See steps 13 through 18 starting on page

17 Replacing the inlet filter Required materials Inlet filter Particle-free, powder-free, non-latex gloves To replace the inlet filter: Caution: To avoid damaging electronic components, power-off the binary solvent manager before replacing the inlet filter. 1. Power-off the binary solvent manager. Warning: Solvent spill risk. Failure to move the solvent bottles to a location below the solvent manager head can result in solvent spills. 2. Move the solvent bottles to a location below the solvent manager head. 3. Loosen the tube fitting on the inlet filter assembly. Inlet filter assembly Tube fitting i 2 Valve actuator 4. Unscrew the inlet filter assembly from the i 2 Valve actuator. 17

18 5. Disassemble the inlet filter by unscrewing the two halves of the inlet filter assembly. Two halves of inlet filter assembly 6. Remove the inlet filter from the tube. Inlet filter housing Metal locking ring Tube Tube fitting 7. Insert the metal locking ring onto the tube. Ensure that the flat side of the metal locking ring is facing toward the tube fitting. 8. Insert the tube into the new inlet filter housing. 9. Screw the two halves of the inlet filter assembly together. Do not fully tighten at this time. 10. Insert the inlet filter assembly into the inlet port on the i 2 Valve actuator, and tighten it securely. 18

19 11. Finish tightening the tube fitting on the inlet filter assembly to the extent possible. 12. Power-on the binary solvent manager. Replacing the accumulator check valve Caution: To prevent contamination, wear particle-free, powder-free, non-latex gloves when replacing the check valve. Required materials Accumulator check valve assembly Particle-free, powder-free, non-latex gloves 1/2-inch open-end wrench 1/4-inch open-end wrench 5/16-inch open-end wrench To replace the accumulator check valve: Caution: To avoid damaging electronic components, power-off the binary solvent manager before replacing the accumulator check valve. 1. Power-off the binary solvent manager. Warning: Solvent spill risk. Failure to move the solvent bottles to a location below the solvent manager head can result in solvent spills. 2. Move the solvent bottles to a location below the solvent manager head. 3. Use the 5/16-inch open-end wrench to hold the check valve in place. 19

20 4. Use the 1/4-inch open-end wrench to disconnect the tubing fitting from the check valve. 5/16-inch open-end wrench Accumulator check valve Tubing fitting 1/4-inch open-end wrench 5. Use the 1/2-inch open-end wrench to loosen the check valve, and remove the check valve assembly from the solvent manager head. Solvent manager head Accumulator check valve 1/2-inch open-end wrench TP

21 Caution: When you remove the check valve, make sure you also remove the PEEK washer. 6. Carefully remove the new check valve and washer from the packaging. 7. Insert the new PEEK washer into the new check valve. Make sure the chamfered edge of the washer faces away from the check valve. Chamfered edge facing away from check valve PEEK washer Check valve 8. Insert the check valve assembly into the solvent manager head, and tighten the check valve nut 1/8-turn beyond finger-tight. 9. Use the 5/16-inch open-end wrench to hold the check valve in place. Reattach the fitting to the check valve, and tighten the compression screw 1/4-turn beyond finger-tight for existing stainless steel tubing, or 1/2-turn beyond finger-tight for new stainless steel tubing. 10. Power-on the binary solvent manager. 21

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